Что не так?
package com.javarush.task.task05.task0529;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.ArrayList;
/*
Консоль-копилка
*/
public class Solution {
public static void main(String[] args) throws Exception {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
String s = reader.readLine();
int c = 0;
while (!(s.equals("exit"))) {
int n = Integer.parseInt(reader.readLine(s));
c += n;
if (s.equals("exit")) {
break;
}
System.out.println(c);
}
}
}